`vue/no-ref-as-operand` to support `ref` from composable

[kong-troop]

Please describe what the rule should do:

Current vue/no-ref-as-operand rule only support the local ref. If a ref is being returned from a composable and being use with operand (eg: returnedRef++) , it didnt throw any warning as expected.

What category should the rule belong to?

[ ] Enforces code style (layout)
[x] Warns about a potential error (problem)
[ ] Suggests an alternate way of doing something (suggestion)
[ ] Other (please specify:)

Provide 2-3 code examples that this rule should warn about:

const ok = ref(true)
const msg = ok ? 'yes' : 'no' // this throws warning as expected

// ---- //

const ok = useOk() // returned as Ref<boolean>
const msg = ok ? 'yes' : 'no' // No warning was shown

Additional context

[FloEdelmann]

ESLint and thus eslint-plugin-vue only has access to the current file while linting, so checking what might be returned from some other file is difficult.

Maybe if typescript-eslint's parser is used, we have access to the types and can report those cases then? Feel free to try that and submit a PR.

[Flareonn]

I have a similar problem. Based on the comment above, for the test I made a composable in one file

My example of playback:

import { defineComponent, ref } from 'vue'

const useMyRef = () => ref(true)

export const TestComponent = defineComponent({
	name: 'TestComponent',
	setup() {
		const test2 = ref(true)
		const ctx = useMyRef()

		// Not valid - true
		if (test2) {
			console.log('')
		}

		// Valid - wtf?
		if (ctx) {
			console.log('')
		}

		return () => null
	},
})